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November 20, 2010
Historians in the German state of North Rhine Westphalia announced on Tuesday that they have deciphered mysterious 500 year old graffiti left in an old abbey attic. The etchings are likely practice drawings made by handwork apprentices.
For years people working in the former St. Katherina Church near Langerwehe had noticed the enigmatic drawings, but it wasn't until 2009 that the LVR regional authority for monument preservation began closely examining their origins, spokeswoman Sabine Cornelius told The Local.
They were surprised to find that the forty-by-two-metre plaster wall bore the tentative marks of young apprentices in the 15th century.
it looked like a heraldry shield.